Aug 10, 2013 2:30pm PDT
seating foams that we put into our cars. >> america is the world's leading producer of soybeans. by using oil from soybeans to make materials like the foam ellen showed me, ford now uses far less petroleum. and soybeans cause less pollution. >> so, one of the other areas we're working on is over here. and do you know what this is? >> it's wheat, right? >> exactly. so we're looking at wheat, as well as other natural fibers, to put into our hard-molded plastics in place of things like fiberglass and minerals to make our plastics stronger. so, in addition to putting natural materials to improve the environmental friendliness, it also makes our plastics lighter in weight. >> why is lightweight so important? >> well, the lighter the weight of our vehicles, the better the fuel economy. >> and that means cars can go further on less gas. >> this is a fiber called "kenaf." that can either be combined with plastic and molded into a part like this or something that's more like this. and this one, i think, is one of the more interesting ones we've been looking at recently. do you know what that is? >
Aug 9, 2013 6:30pm PDT
, we are off to central america where archaeologists have discovered a 1500-year-old mayan freeze. they excavated the sculpture in the jungles of northern guatemala. >> the well preserved picture. researchers said the findings would provide important clues on the mayan civilization. they say further discoveries are likely. indiana jones would be on his way. all right, you are up to date. we will see you again at the top of the hour. explore new worlds and new ideas through programs like this, made available for everyone through h contributions to your pbs station from viewers like you. dr. joel fuhrman is a board-certified physician whose groundbreaking work has been acclaimed as a medical breakthrough for weight loss, disease reversal and prevention. the american diet today has 62% of calories from processed foods. how many of you would like a promise that you don't have to have a heart attack when you get older?
Aug 10, 2013 4:00pm PDT
common. they're run by people like you and me, and they got a helping hand from youth service america, y.s.a. >> y.s.a. is a global nonprofit that reaches out to young people around the world, now in over 106 countries, and asks them to change the world. >> i help the senior citizens locally through a charity. >> i'm an adviser for prep for prep on saturdays, which is this program that helps low-income kids get into independent schools. >> i'm going to nicaragua to build for a community. >> i definitely want to start a charity for people and children in the world who don't have everything that we have, but i don't really know how to. >> we often report on service projects kids are doing. that's how we found out about y.s.a. it helps great ideas find support and funding. according to y.s.a., there are four ways kids can change the world. >> the first is through awareness, where they raise awareness about big issues. second thing is service, where they intervene. they provide their time and their talents to a big problem. third is through advocacy, where they might do letters to the edi